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CN201056676Y - Breakdown lorry for highroad anti-collision guardrail - Google Patents

Breakdown lorry for highroad anti-collision guardrail Download PDF

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Publication number
CN201056676Y
CN201056676Y CNU2007200390031U CN200720039003U CN201056676Y CN 201056676 Y CN201056676 Y CN 201056676Y CN U2007200390031 U CNU2007200390031 U CN U2007200390031U CN 200720039003 U CN200720039003 U CN 200720039003U CN 201056676 Y CN201056676 Y CN 201056676Y
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China
Prior art keywords
oil cylinder
hydraulic
guide rail
van
support
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Expired - Fee Related
Application number
CNU2007200390031U
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Chinese (zh)
Inventor
侯学武
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Individual
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Individual
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Priority to CNU2007200390031U priority Critical patent/CN201056676Y/en
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Publication of CN201056676Y publication Critical patent/CN201056676Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a breakdown van for the road safety barriers, belonging to the breakdown van for the safety barriers. The breakdown van comprises a truck-mounted crane and a working device, wherein the working device comprises a connector and a hydraulic pile driver, wherein the hydraulic pile driver is connected with a telescopic arm of the truck-mounted crane through the connector and a hook and a pile puller are connected with the connector through a steel cable. The breakdown van has the advantages that: 1. The van is able to be positioned on a truck-mounted crane of any tonnage, integrating the functions of pile driving, pile pulling, hoisting and transport, with swiftness, convenience, multi-functions and multi-purposes, thus improving the service rate of the equipment; 2. Refitted from the truck-mounted crane, the utility model has lower investment and greatly reduces the technical difficulty of manufacture and installation with easy realization; 3. The van has total hydraulic operation, flexible and easy construction and high working efficiency; 4. The van can load sufficient construction materials and equipment when entering a site without occupying the trunk capacity; 5. The van is able to turn left and right at an angle larger than 360 degrees, and to carry out construction on both the left and right sides without needing to totally block the roads during the construction.

Description

Crashproof the protecting of highway blocked breakdown van
Technical field
The utility model relates to a kind of crashproof protecting and blocks breakdown van, and crashproof the protecting of particularly a kind of highway blocked breakdown van.
Background technology
At present, China's speedway develops rapidly, for safe driving, in speedway both sides and central zone anticollision barrier is installed.Some driver is owing to drive continuously, fatigue driving, and the bad and rain of vehicle condition, snow, greasy weather gas, or reason such as the speed of a motor vehicle is too fast, may break the accident of highway facilitieses such as anticollision barrier, the highway anti-collision guardrail that is broken need be repaired, need when repairing highway anti-collision guardrail the anticollision barrier stake to be extracted or squeezed into special equipment, just can finish repair, because speedway is longer, need with automobile the pile driver of having taken apart, the damage place that extractor is transported to anticollision barrier are driven it down with hanging device again, install and drop into construction again; The construction dismounting again that is over, and then pile driver, extractor are transported back with transport vehicle repairs that anticollision barrier is wasted time and energy, speed is slow, efficient is low, in addition can't a tractor serves several purposes.
Summary of the invention
The purpose of this utility model is to provide a kind of travelling speed quick and easy, can have construction simultaneously, and crashproof the protecting of highway of transportation and the integrated function of lifting blocked breakdown van.
The purpose of this utility model is achieved in that this breakdown van has lorry-mounted crane and equipment, lorry-mounted crane includes vehicle body, telescopic arm, telescopic oil cylinder, amplitude oil cylinder, turntable, seven tunnel revolution distributors, rotary motor, seat, promote motor, nine multiple directional control valves, hydraulic oil container, four position-5 way valves, gear pump, power takeoff, the horizontal support legs oil cylinder, movable supporting legs, support oil cylinder, telescopic arm, telescopic oil cylinder, amplitude oil cylinder, turntable, seven tunnel revolution distributors, rotary motor, seat, promote motor, nine multiple directional control valves, hydraulic oil container, four position-5 way valves, gear pump, power takeoff, the horizontal support legs oil cylinder, movable supporting legs, support oil cylinder is installed on the vehicle body; Equipment includes connector and hydraulic pile driver, and hydraulic pile driver is connected with the telescopic arm of lorry-mounted crane by connector, also is connected with suspension hook and pile extractor by wire rope on connector.
Connector comprises the oil cylinder of lying on the back, connects support, pivoted arm and positioning disk, and pivoted arm is connected with positioning disk, and pivoted arm links with being connected support, and an end of the oil cylinder of lying on the back is connected with pivoted arm, the other end be connected the support connection, on the connection support, be connected with pulley.
Positioning disk is made up of fixed disk, guide rail dish, guide rail dish axle and adjustment oil cylinder, and the guide rail dish is connected with fixed disk by guide rail dish axle, and an end of adjusting oil cylinder is connected on the guide rail dish, and an end is connected on the fixed disk, and fixed disk is connected with pivoted arm is vertical.
Hydraulic pile driver comprises pile cover, drill steel, hydraulic hammer, hydraulic hammer fastening devices, hoist cylinder, oil cylinder pillar and lifting column, pile cover is connected the lower end of hydraulic hammer by drill steel, hydraulic hammer is connected with lifting column by the hydraulic hammer fastening devices, lifting column is installed on the guide rail dish, be connected with hoist cylinder in the lifting column, hoist cylinder one end and oil cylinder pillar upper articulation, the other end is hinged by its piston rod and lifting column, and the top of guide rail dish is fixed with the oil cylinder pillar.
Beneficial effect: owing to adopt such scheme, this breakdown van has lorry-mounted crane and equipment, work clothes to be equipped with to be connected support, pivoted arm, hydraulic hammer, drill steel, pile cover, hydraulic hammer fastening devices, hoist cylinder, oil cylinder pillar, the oil cylinder of lying on the back, lifting column and positioning disk; Connecting support is fixed on the telescopic arm of lorry-mounted crane; Pivoted arm is installed in and connects on the support; Lie on the back oil cylinder one end be connected support and link to each other, the other end is connected with pivoted arm by its piston rod; Positioning disk is made up of fixed disk, guide rail dish, guide rail dish axle and adjustment oil cylinder, fixed disk is fixed on the pivoted arm, the guide rail dish is hinged by guide rail dish axle and fixed disk, adjusting oil cylinder one end links to each other with fixed disk, the other end is connected with the guide rail dish, and the oil cylinder pillar is fixed on guide rail dish top, and lifting column is installed on the guide rail dish, hoist cylinder one end and oil cylinder pillar upper articulation, the other end is hinged by its piston rod and lifting column.Hydraulic hammer is installed on the lifting column by the hydraulic hammer fastening devices; Hydraulic transmission is a power with the former car engine of lorry-mounted crane, divide nine the tunnel to export controlling level support oil cylinder, support oil cylinder, rotary motor, amplitude oil cylinder, semi-girder oil cylinder, the oil cylinder of lying on the back, adjustment oil cylinder, hoist cylinder respectively, promote the action of motor and hydraulic hammer, on connector, also be connected with suspension hook and pile extractor by wire rope, can carry out the work of lifting and pile pulling, travelling speed is quick and easy, can have construction simultaneously, transportation and the integrated function of lifting have reached the purpose of this utility model.This breakdown van has: 1, can be installed on the lorry-mounted crane of any tonnage, to melt piling, dial stake, lifting and transportation be one to the utility model, and quick and easy, multifunctional and multipurpose improves capacity utilization.2, the utility model is owing to be with lorry-mounted crane repacking, thereby small investment.Also significantly reduce simultaneously and make the technical difficulty of installing, realize easily.3, all-hydraulic operation, flexible, the high efficiency of constructing.4, do not take the railway carriage volume, thereby when entering the scene, but abundant construction material and the equipment of roping do not need to send in addition automobile again, and a car is just.5, can be greater than 360 ° of left and right sides full circle swingings, can left and right sides construction, thereby automobile need not reverse end for end, and do not need totally-enclosed road during operation, vehicle can normally pass through on the road.
Description of drawings
Fig. 1 is the structure chart of the utility model equipment postposition.
Fig. 2 is the preposition structure chart of the utility model equipment.
Fig. 3 is the structure chart of the utility model equipment.
Fig. 4 is the left TV structure figure of Fig. 3.
Fig. 5 is the structure chart of the utility model piling state.
Fig. 6 is the structure chart of the utility model pile pulling state.
Fig. 7 is the structure chart of the utility model lifting gear.
Fig. 8 is a hydraulic control structure chart of the present utility model.
The specific embodiment
Embodiment 1: among the figure, and 1, pile cover; 2, hydraulic hammer; 3, hydraulic hammer fastening devices; 4, adjust oil cylinder; 5, hoist cylinder; 6, pivoted arm; 7, positioning disk; 8, connect support; 9, the oil cylinder of lying on the back; 10, telescopic arm; 11, lifting column; 12, telescopic oil cylinder; 13, amplitude oil cylinder; 14, turntable; 15, seven tunnel revolution distributors; 16, rotary motor; 17, vehicle body; 18, seat; 19, promote motor; 20, nine multiple directional control valves; 21, hydraulic oil container; 22, four position-5 way valves; 23, gear pump; 24, power takeoff; 25, oil cylinder pillar; 26, horizontal support legs oil cylinder; 27, movable supporting legs; 28, suspension hook; 29, pile extractor; 30, support oil cylinder; 31, fixed disk; 32, guide rail dish; 33, lorry-mounted crane; 35, drill steel; 36, guide rail dish axle; 37, lifting bidirectional hydraulic lock; 38, bidirectional balanced valve; 39, unidirectional equalizing valve; 40, the bidirectional hydraulic lock of lying on the back; 41, choke valve; 42, support oil cylinder bidirectional hydraulic lock.
This breakdown van has lorry-mounted crane 33, connector and hydraulic pile driver, lorry-mounted crane includes vehicle body 17, telescopic arm 10, telescopic oil cylinder 12, amplitude oil cylinder 13, turntable 14, seven tunnel revolution distributors 15, rotary motor 16, seat 18, promote motor 19, nine multiple directional control valves 20, hydraulic oil container 21, four position-5 way valves 22, gear pump 23, power takeoff 24, horizontal support legs oil cylinder 26, movable supporting legs 27, support oil cylinder 30, telescopic arm 10, telescopic oil cylinder 12, amplitude oil cylinder 13, turntable 14, seven tunnel revolution distributors 15, rotary motor 16, seat 18, promote motor 19, nine multiple directional control valves 20, hydraulic oil container 21, four position-5 way valves 22, gear pump 23, power takeoff 24, horizontal support legs oil cylinder 26, movable supporting legs 27, support oil cylinder 30 is installed on the vehicle body 17, hydraulic pile driver is connected with the telescopic arm 10 of lorry-mounted crane 33 by connector, also is connected with suspension hook 28 and pile extractor 29 by wire rope on connector.
Connector comprises the oil cylinder 9 of lying on the back, connects support 8, pivoted arm 6 and positioning disk 7, pivoted arm 6 is connected with positioning disk 7, and pivoted arm 6 links with being connected support 8, and an end of the oil cylinder 9 of lying on the back is connected with pivoted arm 6, the other end be connected support 8 and connect, be connected with pulley connecting on the support 8.
Positioning disk is made up of fixed disk 31, guide rail dish 32, guide rail dish axle 36 and adjustment oil cylinder 4, guide rail dish 32 is connected with fixed disk 31 by guide rail dish axle 36, an end of adjusting oil cylinder 4 is connected on the guide rail dish 32, and an end is connected on the fixed disk 31, fixed disk 31 and 6 vertical connections of pivoted arm.
Hydraulic pile driver comprises pile cover 1, drill steel 35, hydraulic hammer 2, hydraulic hammer fastening devices 3, hoist cylinder 5, oil cylinder pillar 25 and lifting column 11, pile cover 1 is connected the lower end of hydraulic hammer 2 by drill steel 35, hydraulic hammer 2 is connected with lifting column 11 by hydraulic hammer fastening devices 3, lifting column 11 is installed on the guide rail dish 32, be connected with hoist cylinder 5 in the lifting column 11, hoist cylinder 5 one ends and oil cylinder pillar 25 upper articulations, the other end is hinged by its piston rod and lifting column 11, and the top of guide rail dish 32 is fixed with oil cylinder pillar 25.
The utility model is by comprising vehicle body 17, lorry-mounted crane 33, connection support 8, pivoted arm 6, hydraulic hammer 2, drill steel 35, hydraulic hammer fastening devices 3, hoist cylinder 5, oil cylinder pillar 25, the oil cylinder 9 of lying on the back, lifting column 11 and positioning disk 7.Connecting support 8 is fixed on telescopic arm 10 leading sections of lorry-mounted crane.Pivoted arm 6 is installed in articulated form and connects on the support 8.Lie on the back oil cylinder 9 one ends be connected support 8 and link to each other, the other end is connected with pivoted arm 6 by its piston rod, when it is flexible, just drives pivoted arm 6 rotations.Positioning disk 7 is made up of fixed disk 31, guide rail dish 32, guide rail dish axle 36 and adjustment oil cylinder 4.Fixed disk 31 is fixedlyed connected with pivoted arm 6.Guide rail dish 32 is hinged by guide rail dish axle 36 and fixed disk 31.Adjust oil cylinder 4 one ends and link to each other with fixed disk 31, the other end is connected with guide rail dish 32.By adjusting the telescopic variation of oil cylinder 4, guide rail dish 32 can be made small angle oscillation with respect to fixed disk 31.Oil cylinder pillar 25 is a hollow leg, fixedlys connected with guide rail dish 32 tops with its underpart.Lifting column 11 is installed on the guide rail dish 32, slidably.Hoist cylinder 5 is installed in the oil cylinder pillar 25, an end and oil cylinder pillar 25 upper articulations, and the other end is hinged by its piston rod and lifting column 11.Hydraulic hammer 2 is installed in the bottom of lifting column 11 by hydraulic hammer fastening devices 3, and lifting column 11 moves up and down along with the flexible of hoist cylinder 5, also is being with hydraulic hammer 2 to move up and down simultaneously.
Hydraulic transmission improves based on the former car Hydraulic Power Transmission System of lorry-mounted crane.Hydraulic transmission is made of power takeoff 24, gear pump 23, nine multiple directional control valves 20, seven tunnel revolution distributors 15, four position-5 way valves 22 and hydraulic oil container 21, the two-way liquid lock 37 of lifting, bidirectional balanced valve 38, unidirectional equalizing valve 39, the bidirectional hydraulic lock 40 of lying on the back, choke valve 41, support oil cylinder bidirectional hydraulic lock 42.The inlet port of gear pump 23 links to each other with hydraulic oil container 21 by oil pipe.The oil-out of gear pump 23 then links to each other with the input port of nine multiple directional control valves 20 by the joint of seven tunnel revolution distributors 15.The oil return opening of nine multiple directional control valves 20 then links to each other with hydraulic oil container 21 by another pipeline connector of seven tunnel revolution distributors 15 again.In addition, two hydraulic fluid ports of the support oil cylinder control valve A1 of nine multiple directional control valves 20 also are to join with four position-5 way valves 22, horizontal support legs oil cylinder 26 and support oil cylinder 30 respectively by seven tunnel two pipeline connectors in addition that turn round distributors 15, respectively controlling level support oil cylinder 26 and support oil cylinder 30.The control valve A2 of nine multiple directional control valves 20 then also is to be connected with rotary motor 16 by seven tunnel two pipeline connectors in addition that turn round distributors 15.
Lifting bidirectional hydraulic lock 37 is installed in nine multiple directional control valves 20 and the oil circuit that hoist cylinder 5 links to each other, bidirectional balanced valve 38 is installed in nine multiple directional control valves 20 and the oil circuit that telescopic oil cylinder 12 links to each other, unidirectional equalizing valve 39 is installed in nine multichannels and changes in valve 20 and the oil circuit that amplitude oil cylinder 13 links to each other, the bidirectional hydraulic lock 40 of lying on the back is installed in nine multiple directional control valves 20 and the oil circuit that the oil cylinder 9 of lying on the back links to each other, choke valve 41 is installed in the oil circuit that nine multiple directional control valves 20 and rotary motor 16 link, and support oil cylinder bidirectional hydraulic lock 42 is connected in the oil circuit of support oil cylinder 30.
Whole hydraulic transmission joins by power takeoff 24 and vehicle body motor, and it is a power with the motor of vehicle body 17, divides A1-A9 totally 9 tunnel outputs, combines with four position-5 way valves 22 of polyphone.The action of controlling level support oil cylinder 26, support oil cylinder 30, rotary motor 16, amplitude oil cylinder 13, semi-girder oil cylinder 12, the oil cylinder 9 of lying on the back, adjustment oil cylinder 4, hoist cylinder 5, lifting motor 19 and hydraulic hammer 2 respectively.Pull control valve A9 and the A8 that opens nine multiple directional control valves 20 according to need of work, control and lie on the back oil cylinder 9 and adjust the locus state that oil cylinder 4 just can determine guide rail dish 32 and superincumbent oil cylinder pillar 25, lifting column 11 and hydraulic hammer 2 are installed: be in supine position or vertical erectility as making it, to satisfy need of work.
The utility model can be installed on the lorry-mounted crane of any tonnage, and realizes piling, group stake and lifting function.
The course of work: 1, according to need of work, rotary motor 16 is controlled on the A2 road of cocked nine multiple directional control valves 20, and anticlockwise or right rotation workpiece of the present utility model is to the desired location of driving piles.
2, pull control valve A9 that opens the oil cylinder 9 of lying on the back and the control valve A8 that adjusts oil cylinder 4, make lifting column 11 be in the vertical erectility.
3, location: fence upright is placed on the stake position, pulls the control valve A6 that opens hoist cylinder 5, the pile cover on the hydraulic hammer 1 is put into compacting on the fence upright top end face.Pull the control valve A5 that opens telescopic oil cylinder 12 then and pull the control valve A2 that opens rotary motor 16.With spirit level column (stake) is proofreaied and correct to vertical.
4, piling: pull the control valve A7 that opens hydraulic hammer 2, make hydraulic hammer work.At this moment the column top is subjected to heavy load and high-frequency strike, and enter solid roadbed, while is along with the reduction of column height, want the control valve A6 of continuous crawl hoist cylinder 5 that hydraulic hammer 2 is descended synchronously with fence upright, keep pile cover 1 to be pressed in all the time on the column, when the column height drops to setting, close hydraulic hammer control valve A7, hydraulic hammer 1 stops to hit, and piling finishes.The control valve A6 that pulls hoist cylinder afterwards makes hydraulic hammer 2 rise to desired height, and actuating vehicle or rotation rotary motor 16 move on on the next stake position hydraulic hammer then, repeats the operating process continuation piling of front.
5, dial stake: as shown in Figure 5, pull the control valve A1 that opens support oil cylinder 30, and four position-5 way valves 22, make the cross cylinder elongation, movable supporting legs is ejected, near column the time, stop, pull four position-5 way valves 22 again support oil cylinder 30 is stretched out, make the support of piston rod lower fulcrum on the road surface.To dial a device 29 and put into column, top hangs on the suspension hook 28, pulls then and opens the control valve A4 that promotes motor 19, suspension hook 28 is risen stake has been dialled.
6, step is travelled in withdrawal: hoist cylinder 5, the whole withdrawal of piston rod are put in place, and oil cylinder 9 piston rods of will lying on the back are all regained and are put in place; Pull to open and adjust oil cylinder 4 and make lifting column 11 parallel with arm; Start rotary motor 16 rotations, make arm and automotive frame center keep straight line; The power takeoff 24 and the transmission of gear pump 23 are separated, and gear pump 23 quits work.
The utility model is to utilize the motor of automobile to be power, clutch action driven gear pump running by power takeoff, the hydraulic oil of consequent corresponding discharge is transported to nine multiple directional control valves by seven tunnel revolution distributors, restart and respectively join multiple directional control valve and distribute to each Hydraulic Elements and carry out work, the oil return of each Hydraulic Elements is got back in the fuel tank by nine multiple directional control valves and seven tunnel revolution distributors.The speed of each Hydraulic Elements work of the utility model is directly proportional with the flow that rotating speed produced of gear pump 23, and the rotating speed of gear pump is directly proportional with the rotating speed of vehicle body motor, and the rotating speed of motor is directly proportional with fuel delivery.Because required operating pressure, working flow, the duty difference of each Hydraulic Elements, for strengthening reliability of the present utility model, stability and safety, except that adopt nine multiple directional control valves distribute each Hydraulic Elements function required, the utility model also in hydraulic transmission, has been installed choke valve, bidirectional hydraulic lock, unidirectional equalizing valve, bidirectional balanced valve again respectively to satisfy the requirement of the required operating pressure of each Hydraulic Elements, working flow and safety.

Claims (4)

1. crashproof the protecting of highway blocked breakdown van, this breakdown van includes lorry-mounted crane, lorry-mounted crane includes vehicle body, telescopic arm, telescopic oil cylinder, amplitude oil cylinder, turntable, seven tunnel revolution distributors, rotary motor, seat, promote motor, nine multiple directional control valves, hydraulic oil container, four position-5 way valves, gear pump, power takeoff, the horizontal support legs oil cylinder, movable supporting legs, support oil cylinder, telescopic arm, telescopic oil cylinder, amplitude oil cylinder, turntable, seven tunnel revolution distributors, rotary motor, seat, promote motor, nine multiple directional control valves, hydraulic oil container, four position-5 way valves, gear pump, power takeoff, the horizontal support legs oil cylinder, movable supporting legs, support oil cylinder is installed on the vehicle body; It is characterized in that: equipment includes connector and hydraulic pile driver, and hydraulic pile driver is connected with the telescopic arm of lorry-mounted crane by connector, also is connected with suspension hook and pile extractor by wire rope on connector.
2. crashproof the protecting of highway according to claim 1 blocked breakdown van, it is characterized in that: connector comprises the oil cylinder of lying on the back, connects support, pivoted arm and positioning disk, pivoted arm is connected with positioning disk, pivoted arm be connected support hinge joint, the end of oil cylinder of lying on the back is connected with pivoted arm, the other end be connected support and connect, be connected with pulley connecting on the support.
3. crashproof the protecting of highway according to claim 2 blocked breakdown van, it is characterized in that: positioning disk is made up of fixed disk, guide rail dish, guide rail dish axle and adjustment oil cylinder, the guide rail dish is connected with fixed disk by guide rail dish axle, an end of adjusting oil cylinder is connected on the guide rail dish, one end is connected on the fixed disk, and fixed disk is connected with pivoted arm is vertical.
4. crashproof the protecting of highway according to claim 1 blocked breakdown van, it is characterized in that: hydraulic pile driver comprises pile cover, drill steel, hydraulic hammer, hydraulic hammer fastening devices, hoist cylinder, oil cylinder pillar and lifting column, pile cover is connected the lower end of hydraulic hammer by drill steel, hydraulic hammer is connected with lifting column by the hydraulic hammer fastening devices, lifting column is installed on the guide rail dish, be connected with hoist cylinder in the lifting column, hoist cylinder one end and oil cylinder pillar upper articulation, the other end is hinged by its piston rod and lifting column, and the top of guide rail dish is fixed with the oil cylinder pillar.
CNU2007200390031U 2007-06-28 2007-06-28 Breakdown lorry for highroad anti-collision guardrail Expired - Fee Related CN201056676Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200390031U CN201056676Y (en) 2007-06-28 2007-06-28 Breakdown lorry for highroad anti-collision guardrail

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200390031U CN201056676Y (en) 2007-06-28 2007-06-28 Breakdown lorry for highroad anti-collision guardrail

Publications (1)

Publication Number Publication Date
CN201056676Y true CN201056676Y (en) 2008-05-07

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101973227A (en) * 2010-10-11 2011-02-16 南京金长江交通设施有限公司 Guard rail breakdown van
CN105128724A (en) * 2015-08-21 2015-12-09 徐州徐工随车起重机有限公司 Multifunctional guard bar breakdown van
CN110158593A (en) * 2019-05-29 2019-08-23 南京金长江交通设施有限公司 A kind of folding arm assembly
CN114715012A (en) * 2022-03-14 2022-07-08 厦门厦工重工有限公司 Clamp, guardrail breakdown van and guardrail plate mounting method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101973227A (en) * 2010-10-11 2011-02-16 南京金长江交通设施有限公司 Guard rail breakdown van
CN105128724A (en) * 2015-08-21 2015-12-09 徐州徐工随车起重机有限公司 Multifunctional guard bar breakdown van
CN105128724B (en) * 2015-08-21 2018-02-16 徐州徐工随车起重机有限公司 A kind of multifunction guard rail breakdown van
CN110158593A (en) * 2019-05-29 2019-08-23 南京金长江交通设施有限公司 A kind of folding arm assembly
CN110158593B (en) * 2019-05-29 2024-01-30 南京金长江交通设施有限公司 A folding arm device
CN114715012A (en) * 2022-03-14 2022-07-08 厦门厦工重工有限公司 Clamp, guardrail breakdown van and guardrail plate mounting method thereof

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080507

Termination date: 20150628

EXPY Termination of patent right or utility model